note 99933 added to function.create-function
| From: | phenno7 | Date: | Wed, 15 Sep 2010 20:53:17 +0000 |
| Subject: | note 99933 added to function.create-function | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-172586@lists.php.net to get a copy of this message | ||
The function takes as arguments the tree array, the category id on which i want the retrieval, and
the depth level for which i would like the subcategories ids returned.
this saves me a LOT of time on large adjacency list trees.
$ctg_tree = array(
'1'=>array('parent_id'=>0,
'children'=>array(
'2'=>array('parent_id'=>1,
'children'=>array(
'3'=>array('parent_id'=>2))),
'4'=>array('parent_id'=>1,
'children'=>array(
'5'=>array('parent_id'=>4),
'6'=>array('parent_id'=>4))))));
function getSubCategories($ctg_tree, $id, $level = null) {
$getBranchIds =
create_function(
'$tree, $ctg_id, $level = null, $arr = null,'.
' $push = false, $getBranchIds','
if(!$arr) {
$arr = array();
}
if(intval($level) && $push){
$level--;
}
foreach($tree as $key=>$ctg) {
if($push) {
$arr[] = $key;
}
if($ctg_id == $key) {
$start = true;
$push = true;
}
if(count($ctg[\'children\']) && (intval($level) || $level === null)) {
$getBranchIds(
$ctg[\'children\'],$ctg_id,$level,&$arr,$push,$getBranchIds
);
}
if($start) return $arr;
}
return $arr;');
return $getBranchIds(
$ctg_tree, $id, $level, null, false, $getBranchIds
);
}
print_r(getSubCategories($ctg_tree, 4, 1));
Array
(
[0] => 5
[1] => 6
)
print_r(getSubCategories($ctg_tree, 1, 1));
Array
(
[0] => 2
[1] => 4
)
print_r(getSubCategories($ctg_tree, 1));
Array
(
[0] => 2
[1] => 3
[2] => 4
[3] => 5
[4] => 6
)
----
Server IP: 69.147.83.197
Probable Submitter: 93.113.220.253
----
Manual Page -- http://www.php.net/manual/en/function.create-function.php
Edit -- https://master.php.net/note/edit/99933
Del: integrated -- https://master.php.net/note/delete/99933/integrated
Del: useless -- https://master.php.net/note/delete/99933/useless
Del: bad code -- https://master.php.net/note/delete/99933/bad+code
Del: spam -- https://master.php.net/note/delete/99933/spam
Del: non-english -- https://master.php.net/note/delete/99933/non-english
Del: in docs -- https://master.php.net/note/delete/99933/in+docs
Del: other reasons-- https://master.php.net/note/delete/99933
Reject -- https://master.php.net/note/reject/99933
Search -- https://master.php.net/manage/user-notes.php